/*
 * Copyright (C) 2024  Yomitan Authors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

import {basicTextPreprocessorOptions} from '../text-preprocessors.js';

/** @type {Record<string, string>} */
const diacriticMap = {
    ā: 'a',
    ē: 'e',
    ī: 'i',
    ō: 'o',
    ū: 'u',
    ȳ: 'y',
    Ā: 'A',
    Ē: 'E',
    Ī: 'I',
    Ō: 'O',
    Ū: 'U',
    Ȳ: 'Y',
    á: 'a',
    é: 'e',
    í: 'i',
    ó: 'o',
    ú: 'u',
    ý: 'y',
    Á: 'A',
    É: 'E',
    Í: 'I',
    Ó: 'O',
    Ú: 'U',
    Ý: 'Y'
};

/** @type {import('language').TextPreprocessor<boolean>} */
export const removeLatinDiacritics = {
    name: 'Remove diacritics',
    description: 'āēīōūȳ → aeiouy, áéíóúý → aeiouy',
    options: basicTextPreprocessorOptions,
    process: (str, setting) => {
        return setting ? str.replace(/[āēīōūȳáéíóúýĀĒĪŌŪȲÁÉÍÓÚÝ]/g, (match) => diacriticMap[match] || match) : str;
    }
};